... 复合需求 composite demand; joint demand 综合需求 comprehensive demand; integration requirement 总合需求关系 aggregate demand relation ...
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According to the integration requirement of design and manufacturing, this paper discusses the existent problems of geometric modelling, in present CAD systems and the necessity of product modelling.
根据对产品设计与制造集成化的要求，分析了现有CAD系统中几何建模存在的问题及阐述了产品建模的必要性。
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